﻿#define _CRT_SECURE_NO_WARNINGS 1

//编程初学者入门训练第二十题
//BC22 你能活多少秒
//https://www.nowcoder.com/practice/e1d1bd99fee34b66ae3c777b74d555c8?tpId=107&rp=1&ru=%2Fexam%2Foj%2Fta&qru=%2Fexam%2Foj%2Fta&sourceUrl=%2Fexam%2Foj%2Fta%3FtpId%3D107&difficulty=&judgeStatus=&tags=&title=&gioEnter=menu

#include <stdio.h>

int main() {
    int age = 0;
    scanf("%d", &age);
    printf("%lld", (long long)(age * 3.156e7));
    return 0;
}